Download Name Hr

Chapter II Test
Name
Hr.
Understanding Weather
Date:
Total
____________/45
Percentage
____________
Grade
____________
I. MATCHING
Match the correct definition with the correct term. Write the letter in the space provided.
____
1. Amount of water vapor in the air
____
2. Process in which liquid turns to vapor
____
3. Area of high pressure where air moves apart and sinks
____
4. The temperature to which air must cool to be saturated
____
5. Process in which water vapor turns to liquid
____
6. Area of low pressure where air masses meet and rise
____
7. Area in which two types of air masses meet
a. dew point
b. anticyclone
c. humidity
d. evaporation
e. front
ab. condensation
ac. cyclone
II. MULTIPLE CHOICE
Write the letter of the correct answer in the space provided.
____
8. What kind of weather does a stationary front bring?
a.
b.
c.
d.
____
9. If there is a tornado warning for your area, you should
a.
b.
c.
d.
____
find a high place to stay.
go to a room with no windows.
cover all your windows with plywood.
not listen to the radio.
10. Which statement about tornadoes is correct?
a.
b.
c.
d.
____
freezing rain
severe storms
many days of cloudy, wet weather
cold, dry weather
They are a very common part of earthquakes.
Seventy-five percent of the world’s tornadoes occur in the United States.
Their danger is mainly from the heavy rains they bring.
They are the strongest storms on Earth.
11. A storm surge is a dangerous part of
a.
b.
c.
d.
1.
a tornado.
a thunderstorm.
the water cycle.
a hurricane.
____
12. Which describes a cumulonimbus cloud?
a.
b.
c.
d.
____
13. Isobars help meteorologists by
a.
b.
c.
d.
____
a rising air mass.
a source region.
another positively charged area.
a negatively charged area.
15. Meteorologists track cyclones and anticyclones because they
a.
b.
c.
d.
____
creating an image of weather systems.
showing what form precipitation will take.
measuring wind speeds.
showing and connecting together high and low pressure areas.
14. Lightning is an electric discharge between a positively charged area and
a.
b.
c.
d.
____
high, light cloud puffy clouds
stacked, dark, puffy mid-level clouds
low light blanket of clouds
high cloud made of ice crystals
hold dangerous forms of precipitation.
are required by law to map whether patterns as they occur.
help meteorologists predict stormy or clear weather
devote a great deal of time to their profession.
16. Which statement about hail is correct?
a.
b.
c.
d.
It is rain that falls through different atmospheric layers.
It may be sent up into the clouds many times.
It forms in winter in low stratus clouds.
It is a liquid form of precipitation.
III. MATCHING
Match the correct description with the correct term. Write the letter in the space provided.
_____
17. Tracks the location, movement, and amount of precipitation
_____
18. Consists of two thermometers
_____
19. Measures air temperature
_____
20. Measures wind speed
_____
21. Measures air pressure
2.
a. anemometer
b. radar
c. barometer
d. sling psychrometer
e. thermometer
IV. MATCHING
Match the labels to the map. Write the letters in the space provided.
SOURCE REGIONS FOR AIR MASSES THAT INFLUENCE WEATHER IN NORTH AMERICA
____
22. mP
____
23. cP
____
24. mT
____
25. cT
V. True or False
(A) or (B)
26. _________An air mass is a large body of air that has a similar temperature and moisture
level throughout.
27. _________ A front is an area present due to global warming.
28. _________ A tornado develops when wind traveling in two different directions causes the air
in the middle to rotate.
29. _________ When a hurricane moves over land it gains energy due to the prevailing
Westerlies.
30. _________ Radar and satellites are used to help meteorologists forecast the weather.
3.
VI. Matching:
Use the word bank to the right to fill in the letter corresponding to the type of front.
31._________
32._________
A.
B.
C.
D.
Cold Front
Warm Front
Occluded Front
Stationary Front
33._________
34.__________
VII. Reading Passage
Water evaporates into the air from Earth’s surface. This water returns to Earth’s surface as
Precipitation. Precipitation is water, in solid or liquid form that falls from the air to Earth. The
four major types of precipitation are rain, snow, sleet, and hail. The most common form of
precipitation is rain.
A cloud produces rain when the cloud’s water drops become a certain size. A raindrop
begins as a water droplet that is smaller than the period at the end of this sentence. Before a
water drop falls as rain, it must become about 100 times its original size. Water drops get
larger by joining with other water drops. When the water drops become too heavy, they fall as
precipitation.
35. In this passage, what does precipitation mean?
a. acceleration
b. haste
c. Water that falls from the atmosphere to Earth
d. separating a substance from a solution as a solid
36. What is the main idea of he second paragraph?
a. Rain occurs when the water droplets in clouds become large enough to fall.
b. Water droplets fall to the ground
c. Rain drops are very small at first.
d. Rain is a form of precipitation
37. According to the passage, which step happens last in the formation of precipitation?
a. Water evaporates into the air
b. Water droplets fall to the ground
c. Water turns to vapor
d. Droplets grow in size.
4.
Use figures 1 and 2 to answer questions 38-41.
Figure 1
Figure 2
Dry-Bulb
Wet-Bulb
Temperature Temperature
Depression
(difference)
DB
DB -WB
Day 1
Day 2
Day 3
Day 4
50°F
70°F
78°F
90°F
WB
44° F
64° F
66° F
84° F
Relative
Humidity
%
%
%
%
%
38. What is the relative humidity for day 1
a. 6 %
c. 93%
b. 62%
d. 44%
39. What is the relative humidity for day 2
a. 72%
c. 70%
b. 7%
d. 60%
40. What is the temperature for Day 3?
a. 66°
c. 78°
b. 64°
d. 12°
41. What is the temperature and relative humidity
for day 4?
a. Temperature = 90°
Relative humidity = 90%
b. Temperature = 90°
Relative humidity = 78%
c. Temperature = 84°
Relative humidity = 78%
d. Temperature = 78°
Relative humidity = 70%
42. What instrument was used to determine the wet bulb and dry bulb reading?
a. anemometer
c. sling psychrometer
b. thermometer
d. wind vein
43. If caught outside during a tornado you should
a. Head for the nearest tree
c. Find an abandoned building for shelter
b. Lie in a large open field or ditch
d. Take shelter under a piece of farm equipment.
44. A tornado warning indicates that
a. Conditions are present for a possible tornado
b. You should keep an eye out the windows for possible activity
c. You should take cover in the house attic
d. You should take cover in the house basement
45. Before vapor can condense it must
a. Gain energy
b. Rise into the air
c. Have a surface to adhere to
d. Crystallize
Answer Key to Chapter 2 Test.
1.c
2.d
3.b
4.a
5.ab
6.ac
7.e
8.c
9.b
10.b
11.d
12.b
13.d
14.d
15.c
16.b
17.b
18.d
19.e
20.a
21.c
22.d
23.a
24.c
25.b
26.a
27.b
28.a
29.b
30.a
31.b
32.a
33.d
34.c
35.c
36.a
37.b
38.b
39.a
40.c
41.b
42.c
43.b
44.d
45.c